There are 36 boys and 44 girls in a class. The average score of boys is 40…

2025

There are 36 boys and 44 girls in a class. The average score of boys is 40 points and girls is 35 points. Then what will be the average score of the class?

  1. A.

    37.25

  2. B.

    42

  3. C.

    43

  4. D.

    34

Attempted by 52 students.

Show answer & explanation

Correct answer: A

Method: Use a weighted average of the two groups.

  1. Number of boys = 36, average of boys = 40. Total score of boys = 36 × 40 = 1440.

  2. Number of girls = 44, average of girls = 35. Total score of girls = 44 × 35 = 1540.

  3. Total students = 36 + 44 = 80. Total score = 1440 + 1540 = 2980.

  4. Class average = Total score ÷ Total students = 2980 ÷ 80 = 37.25.

Answer: 37.25

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